Maths Olympiad Prep

Library /Brazilian Mathematical Olympiad

Brazilian Mathematical Olympiad

140 problems here, rated 3.9 to 7.6 on our scale (AMC 10/12 to National Olympiad, round 2). 139 of them ask for a proof.

Algebra 28Combinatorics 35Geometry 51Number theory 26
#TopicDiffTypeYear
1 Algebra 3.9 answer — open
2 Geometry 4.3 proof — open
3 Combinatorics 4.4 proof — open
4 Geometry 4.5 proof — open
5 Geometry 4.5 proof — open
6 Geometry 4.5 proof — open
7 Geometry 4.5 proof — open
8 Geometry 4.5 proof — open
9 Algebra 4.5 proof — open
10 Geometry 4.5 proof — open
11 Geometry 4.5 proof — open
12 Number theory 4.5 proof — open
13 Number theory 4.5 proof — open
14 Geometry 4.5 proof — open
15 Algebra 4.5 proof — open
16 Algebra 4.5 proof — open
17 Number theory 4.6 proof — open
18 Geometry 4.6 proof — open
19 Number theory 4.6 proof — open
20 Number theory 4.6 proof — open
21 Geometry 4.6 proof — open
22 Algebra 4.6 proof — open
23 Number theory 4.6 proof — open
24 Geometry 4.6 proof — open
25 Combinatorics 4.6 proof — open
26 Number theory 4.6 proof — open
27 Algebra 4.7 proof — open
28 Number theory 4.7 proof — open
29 Number theory 4.7 proof — open
30 Geometry 4.7 proof — open
31 Algebra 4.7 proof — open
32 Combinatorics 4.7 proof — open
33 Geometry 4.7 proof — open
34 Geometry 4.7 proof — open
35 Algebra 4.7 proof — open
36 Combinatorics 4.7 proof — open
37 Algebra 4.7 proof — open
38 Geometry 4.7 proof — open
39 Combinatorics 4.7 proof — open
40 Geometry 4.8 proof — open
41 Combinatorics 4.8 proof — open
42 Algebra 4.8 proof — open
43 Combinatorics 4.8 proof — open
44 Number theory 4.8 proof — open
45 Number theory 4.8 proof — open
46 Geometry 4.8 proof — open
47 Combinatorics 4.8 proof — open
48 Algebra 4.8 proof — open
49 Algebra 4.8 proof — open
50 Geometry 4.9 proof — open
51 Combinatorics 4.9 proof — open
52 Geometry 4.9 proof — open
53 Combinatorics 4.9 proof — open
54 Algebra 4.9 proof — open
55 Algebra 4.9 proof — open
56 Algebra 4.9 proof — open
57 Number theory 5.0 proof — open
58 Combinatorics 5.0 proof — open
59 Number theory 5.0 proof — open
60 Geometry 5.0 proof — open
61 Number theory 5.0 proof — open
62 Geometry 5.0 proof — open
63 Geometry 5.0 proof — open
64 Combinatorics 5.0 proof — open
65 Geometry 5.0 proof — open
66 Geometry 5.1 proof — open
67 Algebra 5.1 proof — open
68 Geometry 5.1 proof — open
69 Geometry 5.2 proof — open
70 Number theory 5.2 proof — open
71 Geometry 5.3 proof — open
72 Number theory 5.3 proof — open
73 Combinatorics 5.3 proof — open
74 Combinatorics 5.4 proof — open
75 Geometry 5.4 proof — open
76 Geometry 5.5 proof — open
77 Combinatorics 5.5 proof — open
78 Algebra 5.5 proof — open
79 Algebra 5.5 proof — open
80 Number theory 5.5 proof — open
81 Geometry 5.5 proof — open
82 Number theory 5.6 proof — open
83 Algebra 5.6 proof — open
84 Geometry 5.6 proof — open
85 Geometry 5.7 proof — open
86 Algebra 5.7 proof — open
87 Combinatorics 5.7 proof — open
88 Combinatorics 5.7 proof — open
89 Combinatorics 5.7 proof — open
90 Number theory 5.7 proof — open
91 Geometry 5.7 proof — open
92 Geometry 5.7 proof — open
93 Combinatorics 5.7 proof — open
94 Geometry 5.7 proof — open
95 Geometry 5.7 proof — open
96 Geometry 5.7 proof — open
97 Number theory 5.7 proof — open
98 Algebra 5.7 proof — open
99 Number theory 5.8 proof — open
100 Combinatorics 5.8 proof — open
101 Geometry 5.8 proof — open
102 Geometry 5.9 proof — open
103 Geometry 6.0 proof — open
104 Combinatorics 6.0 proof — open
105 Geometry 6.0 proof — open
106 Algebra 6.0 proof — open
107 Geometry 6.2 proof — open
108 Algebra 6.2 proof — open
109 Geometry 6.2 proof — open
110 Algebra 6.2 proof — open
111 Geometry 6.3 proof — open
112 Combinatorics 6.3 proof — open
113 Number theory 6.3 proof — open
114 Geometry 6.3 proof — open
115 Number theory 6.3 proof — open
116 Geometry 6.3 proof — open
117 Combinatorics 6.3 proof — open
118 Algebra 6.5 proof — open
119 Combinatorics 6.5 proof — open
120 Combinatorics 6.5 proof — open
121 Algebra 6.5 proof — open
122 Number theory 6.5 proof — open
123 Geometry 6.6 proof — open
124 Combinatorics 6.6 proof — open
125 Combinatorics 6.7 proof — open
126 Geometry 6.8 proof — open
127 Geometry 6.8 proof — open
128 Combinatorics 6.8 proof — open
129 Combinatorics 6.8 proof — open
130 Combinatorics 6.8 proof — open
131 Combinatorics 6.8 proof — open
132 Algebra 7.0 proof — open
133 Combinatorics 7.0 proof — open
134 Combinatorics 7.1 proof — open
135 Geometry 7.1 proof — open
136 Number theory 7.1 proof — open
137 Number theory 7.2 proof — open
138 Combinatorics 7.4 proof — open
139 Algebra 7.5 proof — open
140 Combinatorics 7.6 proof — open
These are sorted by difficulty within the competition, but they aren't a course. The track is the route through, drawn from all the sources at once.